Sewing machine



FIG. 1 is a front elevational view of a sewing machine showing my newdesign.

FIG. 2 is a rear elevational view thereof.

FIG. 3 is a top plan view thereof.

FIG. 4 is a right end elevational view thereof.

FIG. 5 is a left end elevational view thereof.

The ornamental design for a sewing machine, as shown and described.